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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
106 | $user_id = email_exists( $email ); |
107 | if ( ! $user_id ) { // Create a new user with a random password |
108 | /** |
109 | * Fires immediately before a new user is created via the network site-new.php page. |
110 | * |
111 | * @since 4.5.0 |
112 | * |
113 | * @param string $email Email of the non-existent user. |
114 | */ |
115 | do_action( 'pre_network_site_new_created_user', $email ); |
116 |
|
117 | $user_id = username_exists( $domain ); |
118 | if ( $user_id ) { |
119 | wp_die( __( 'The domain or path entered conflicts with an existing username.' ) ); |
120 | } |
121 | $password = wp_generate_password( 12, false ); |
122 | $user_id = wpmu_create_user( $domain, $password, $email ); |
123 | if ( false === $user_id ) { |
124 | wp_die( __( 'There was an error creating the user.' ) ); |